add abstract factory patterns and singleton factory

rachoo · rachoo · commit b86eb7bb98ef · 2014-08-19T10:11:33.000+08:00
diff --git a/src/main/java/cn/com/nianduen/absfactory/AbsHumanFactory.java b/src/main/java/cn/com/nianduen/absfactory/AbsHumanFactory.java
@@ -0,0 +1,10 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public abstract class AbsHumanFactory {
+
+    public abstract Human createHuman(Class<? extends Human> c);
+
+}
diff --git a/src/main/java/cn/com/nianduen/absfactory/African.java b/src/main/java/cn/com/nianduen/absfactory/African.java
@@ -0,0 +1,18 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class African implements Human{
+
+    @Override
+    public void getColor() {
+        System.out.println("I am black");
+    }
+
+    @Override
+    public void talk() {
+        System.out.println("ji li gua la");
+    }
+
+}
diff --git a/src/main/java/cn/com/nianduen/absfactory/Asians.java b/src/main/java/cn/com/nianduen/absfactory/Asians.java
@@ -0,0 +1,18 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class Asians implements Human{
+
+    @Override
+    public void getColor() {
+        System.out.println("I am yellow");
+    }
+
+    @Override
+    public void talk() {
+        System.out.println("i speak Chinese");
+    }
+
+}
diff --git a/src/main/java/cn/com/nianduen/absfactory/Europeans.java b/src/main/java/cn/com/nianduen/absfactory/Europeans.java
@@ -0,0 +1,18 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class Europeans implements Human{
+
+    @Override
+    public void getColor() {
+        System.out.println("i am white");
+    }
+
+    @Override
+    public void talk() {
+        System.out.println("i speak English");
+    }
+
+}
diff --git a/src/main/java/cn/com/nianduen/absfactory/Human.java b/src/main/java/cn/com/nianduen/absfactory/Human.java
@@ -0,0 +1,12 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public interface Human {
+
+    public void getColor();
+
+    public void talk();
+
+}
diff --git a/src/main/java/cn/com/nianduen/absfactory/HumanFactory.java b/src/main/java/cn/com/nianduen/absfactory/HumanFactory.java
@@ -0,0 +1,19 @@
+package cn.com.nianduen.absfactory;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class HumanFactory extends AbsHumanFactory {
+
+    @Override
+    public Human createHuman(Class<? extends Human> c) {
+        Human human = null;
+        try {
+            human = (Human) Class.forName(c.getName()).newInstance();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        return human;
+    }
+
+}
diff --git a/src/main/java/cn/com/nianduen/singleton/SingletonFactory.java b/src/main/java/cn/com/nianduen/singleton/SingletonFactory.java
@@ -0,0 +1,27 @@
+package cn.com.nianduen.singleton;
+
+import java.lang.reflect.Constructor;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class SingletonFactory {
+
+    private static SingletonTarget singleton;
+
+    static {
+        try {
+            Class c = Class.forName(SingletonTarget.class.getName());
+            Constructor constructor = c.getDeclaredConstructor();
+            constructor.setAccessible(true);
+            singleton = (SingletonTarget) constructor.newInstance();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    public static SingletonTarget getInstance(){
+        return singleton;
+    }
+
+}
diff --git a/src/main/java/cn/com/nianduen/singleton/SingletonTarget.java b/src/main/java/cn/com/nianduen/singleton/SingletonTarget.java
@@ -0,0 +1,14 @@
+package cn.com.nianduen.singleton;
+
+/**
+ * Created by rachoochen on 8/19/14.
+ */
+public class SingletonTarget {
+
+    private SingletonTarget(){}
+
+    public void doMethod(){
+        System.out.println("hello world, i am create by singleton factory");
+    }
+
+}
diff --git a/src/test/java/cn/com/nianduen/absfactory/HumanFactoryTest.java b/src/test/java/cn/com/nianduen/absfactory/HumanFactoryTest.java
@@ -0,0 +1,32 @@
+package cn.com.nianduen.absfactory;
+
+import org.junit.Test;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import static org.junit.Assert.*;
+
+public class HumanFactoryTest {
+
+    @Test
+    public void testCreateHuman() throws Exception {
+
+        AbsHumanFactory humanFactory = new HumanFactory();
+        Human african = humanFactory.createHuman(African.class);
+        Human asians = humanFactory.createHuman(Asians.class);
+        Human europeans = humanFactory.createHuman(Europeans.class);
+
+        List<Human> list = new ArrayList();
+        list.add(african);
+        list.add(asians);
+        list.add(europeans);
+
+        for (Human human : list){
+            human.getColor();
+            human.talk();
+        }
+
+    }
+
+}
diff --git a/src/test/java/cn/com/nianduen/singleton/SingletonFactoryTest.java b/src/test/java/cn/com/nianduen/singleton/SingletonFactoryTest.java
@@ -0,0 +1,18 @@
+package cn.com.nianduen.singleton;
+
+import org.junit.Test;
+
+import static org.junit.Assert.*;
+
+public class SingletonFactoryTest {
+
+    @Test
+    public void testGetInstance() throws Exception {
+
+        SingletonTarget target1 = SingletonFactory.getInstance();
+        SingletonTarget target2 = SingletonFactory.getInstance();
+        System.out.println(target1);
+        System.out.println(target2);
+
+    }
+}
